Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o pico de 5 anos de Emanuel Lasker, 2847, quando ele atinge o pico de 10 anos?
 ###Tabelas: CREATE TABLE chessmetrics (chessmetrics_id AUTO_INCREMENT PRIMARY KEY, Rank INT, 1-year peak VARCHAR, 5-year peak VARCHAR, 10-year peak VARCHAR, 15-year peak VARCHAR, 20-year peak VARCHAR) CREATE TABLE stadium_and_locations (stadium_and_locations_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Short name VARCHAR, City VARCHAR, Stadium VARCHAR, Capacity INT) CREATE TABLE leading_point_scorers (leading_point_scorers_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Span VARCHAR, Start INT, Tries INT, Conv INT, Pens INT, Drop INT) CREATE TABLE discography_-_original_releases (discography_-_original_releases_id AUTO_INCREMENT PRIMARY KEY, Year INT, Song (s) VARCHAR, Producer (s) VARCHAR, Written By VARCHAR, Artist VARCHAR, Title/Label VARCHAR) CREATE TABLE mixed_doubles:_13_4_titles_9_runner-ups (mixed_doubles:_13_4_titles_9_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score in the final VARCHAR)  
SELECT 5-year peak FROM chessmetrics WHERE 10-year peak = Emanuel Lasker, 2847